1. Ceramic industry: Alumina grinding balls are used as abrasives in the manufacture of ceramics, such as porcelain, pottery, glass, etc.

2. Chemical industry: Aluminum oxide grinding balls are used in the manufacture and grinding of coatings, paints, pigments, asphalt and other materials.

3. Mining industry: Alumina grinding balls are used for fine grinding and separation of metal ore and non-metal ore, such as iron ore, molybdenum ore, copper ore, bauxite,etc.

4. Building materials industry: Alumina grinding balls have high hardness and lower density than steel balls, and are used in the production of building materials such as cement, concrete, and refractory materials, greatly reducing energy consumption.

5. Pharmaceutical industry: Alumina grinding balls have stable chemical composition and can be used in the preparation process of drugs.

6. Other fields: Alumina grinding balls can also be used in precision engineering fields such as electronics, optics, and aerospace.